Describe the purpose, objectives, and specific steps for dissecting a Rana sp. (frog) specimen, focusing on the digestive, urino-genital, cardiovascular, and respiratory systems.

The practical aims to develop dissection and drawing skills, and to familiarize students with dissection instruments.

The general dissection involves opening the cavity to observe and draw the overall organization of viscera, and specifically to show the digestive system, urino-genital system, blood vascular system (cardiovascular system), and respiratory system of a vertebrate. It notes that vertebrates are typically dissected from the ventral side, except for the brain, which can be approached dorsally.

The activity instructs you to use dissecting instruments to open the body cavity of a Rana sp. (frog) specimen to expose its visceral organs.